Flora of North America species comparison

never tuberous.

slender, 0.2-0.8 mm thick.

erect, never rooting nodally, strigose or hirsute, base bulbous and cormlike.

erect or nearly erect, 10-50 cm, glabrous, each with 9-40 flowers.

blades ovate to cordate in outline, 3-foliolate, rarely merely deeply divided, 2–5.3 × 2.4–5.4 cm, leaflets 1–2x-lobed, ultimate segments oblong to obovate, margins toothed, apex rounded in outline.

persistent, blades reniform, outer undivided, inner 3-lobed to 3-foliolate, 1-3.5 × 1.5-4.5 cm, base truncate or cordate, margins crenate, apex rounded or obtuse.

receptacle pubescent;

sepals reflexed 2–3 mm above base, 6–9 × 2–4 mm, pilose;

petals 5, yellow, 9–13 × 8–11 mm.

pedicels pubescent or glabrous;

receptacle sparsely pilose;

sepals 2-3 × 1-2 mm, abaxially sparsely hispid, hairs colorless;

petals 5, 1-2 × 0.5-1 mm;

nectary scale glabrous.

ovoid, 6–9 × 5–7 mm;

achenes 2.2–3.2 × 2.2–2.8 mm, glabrous, margin forming narrow rib 0.1–0.2 mm wide;

beak persistent, lanceolate to deltate, 0.2–0.8 mm, slender tip hooked when present.

globose to ovoid, 3-7 × 3-5 mm;

achenes 1.5-2 × 1.4-1.8 mm, glabrous;

beak slender, strongly curved, 0.6-1 mm.

= 16.